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Finding the Fourth Proportional to 124,465.62, 171,906 and 90,625.44

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Solution

The fourth proportional to 124,465.62, 171,906 and 90,625.44 is: 125,167.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,465.62 : 171,906 = 90,625.44 : x
  2. Step 2: Convert to fraction form
    124,465.62/171,906 = 90,625.44/x
  3. Step 3: Cross multiply
    124,465.62x = 171,906 × 90,625.44
  4. Step 4: Simplify right side
    124,465.62x = 15,579,056,888.64
  5. Step 5: Solve for x
    x = 15,579,056,888.64/124,465.62
  6. Step 6: Final answer
    x = 125,167.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.